<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <script>
        var number=1
        console.log('number.typeof=',typeof number)
        var str='hello'
        console.log('srt.typeof=',typeof str)
        function  fx(num1,num2) {
            var result = num1 + num2
            result = result * 4
            result = result - 3
            return result;
        }
        var b=fx(3,4)
        console.log(b)
    </script>
</head>
<body>

</body>
</html>